Improvement in writing-slates



hindert genna aient @Wire Toall persons to whom these presente maylcome:

-GEORGE EDWIN Poor, 4or cHAnLEsfroWN, MASSACHUSETTS.

. Letter-.@Putent No. 100,799, dated March I5, 1870.

IMPROVEMENT IN WRITINGSLATES.

The Schedule referred to in these Letters Patent and making part of thesaine `Be it known that I, GEORGE EDWIN POOR, of

Charlestown, in the county of Middlesex, and State of Massachusetts,have made 'a new and useful invention or improvement having reference toWriting- Slates; and do herebydeclare the Isame to be fully described inthe following specification, and represented in tlie accompanyingdrawings, of which- Figure 1 is a side view;

,Figure 2, 'a top view; and

Figure 3, an edge elevation of' a writing-slate provided with myinvention. l

In carrying.` out Amy improvement, I form the fi'ame A of theslate-tablet B with a series ot' dovetailed recesses, a', to receivecylindrical or round and dovetailed masses or buers, b, of India rubber,or an equivalent elastic material, each ofthe masses being placed andfastened therein, and arranged so as to project beyond the edge as wellas each of the opposite sides of the frame, in manner :is-represented`in the drawings.

The masses of rubber `or elastic material may be inserted and arranged,as explained, in each oftheopposite ends of the frame as 'welllas in itssides. 'Ihese elastic buers serve to suppolt the writing-slate 'whenlaid upon a desk .or table, and they not only operate to prevent it fromsliding oli' Va desk, .bntalso from making a noise when `laid dow-n uponthe desk or' a table or other body.

` I am aware that a writing-slate has had` its frame made of Indiarubber,-as shown in sundry' patents heretofore granted therefore I makeno claim to such `as my invention.

My improvement can readily be applied to almostany-'common'writing-slate having a wooden frame, thereby rendering itless liable to become broken while n1 use.

. I amalso aware that, prior to my invention, slateframes have beenprovided with elastic cushions, by inserting cylinders of rubber throughholes made in the flames, so that the ends of thecylinders may extendbeyond the sides of the frames.

The corners of slate-frames have also been .protected by elasticcoverings.

ARings or bands of rubber have also been carried Aaroundthe vbars of theframe, and been forced into Witnesses It. H. EDDY, S. N. PIPER.

